I'm trying to hang several of these floating shelves
The shelves are small and each one only weighs about 3-6 lbs each. I don't plan to put anything very heavy on there. I chose those wall anchors because they worked really well with the same shelves in my last home.
Most of them are holding just fine, but four of them came right out of the wall.
Looking at the holes, the drywall must be 5/8" or 3/4". There's a cinderblock firewall behind it. From the front of the wall to the cinderblock measures 1.25", so there's not much room back there.
I tried using a molly bolt but there isn't enough clearance back there to trigger it. Are there any toggle bolts that would work with such a tight space?
Since the shelf spacing has to be precise, I need to use the same holes the self-drilling anchors left. I've filled them with joint compound, waiting for it to fully dry and then fill in any shrinkage.